GATES EMH421 Crankcase Ventilation Hose

Compatible with BMW 3 Compact (E46) , BMW 3 (E46) , BMW 3 Coupe (E46) Show more info
This GATES EMH421 hose is designed for effective crankcase ventilation, ensuring proper engine operation and emissions control.
10.85 EUR
inc. VAT 21%
In stock 21
Delivery 1 day (23.03.2026)
PN EMH421
Make GATES
EAN 5400608338706

The GATES EMH421 crankcase ventilation hose is engineered to maintain optimal engine performance by managing crankcase pressure. This component plays a crucial role in the PCV (Positive Crankcase Ventilation) system, preventing the buildup of harmful blow-by gases within the engine. Proper functioning of the ventilation system helps to reduce oil contamination, prevent sludge formation, and improve overall engine longevity. A damaged or clogged hose can lead to increased emissions, poor fuel economy, and potential engine damage over time. Crafted with durable materials, the GATES EMH421 is built to withstand the demanding conditions within the engine bay, including exposure to heat and oil vapors. Its precise fit ensures easy installation and reliable performance, making it a direct replacement for the original equipment. Choosing a quality replacement hose like the GATES EMH421 is essential for maintaining the health and efficiency of your vehicle's engine. It ensures that the crankcase gases are safely routed and processed, contributing to a cleaner environment and a smoother running engine.

  • Direct fit for specified vehicle applications
  • Ensures proper crankcase pressure regulation
  • Helps reduce oil contamination and sludge buildup
  • Contributes to lower emissions
  • Durable construction for long-lasting performance
  • Replaces original equipment crankcase ventilation hose
  • Designed to withstand engine bay temperatures and oil vapors
Material
Plastic
Hose length [mm]
310
Inner diameter 1 [mm]
1:4
Inner diameter 2 [mm]
1/2"
  • BMW
    • 3 Compact (E46)
      • 316 ti (85kW/115PS)
      • 318 ti (105kW/143PS)
    • 3 (E46)
      • 318 i (105kW/143PS)
      • 316 i (85kW/115PS)
    • 3 Coupe (E46)
      • 318 Ci (105kW/143PS)
      • 318 Ci (110kW/150PS)
    • 3 Touring (E46)
      • 318 i (105kW/143PS)
      • 316 i (85kW/115PS)
    • 3 Kabriolets (E46)
      • 318 Ci (105kW/143PS)
      • 318 Ci (110kW/150PS)
    • 3 (E90)
      • 320 i (110kW/150PS)
    • Z4 Roadster (E85)
      • 2.0 i (110kW/150PS)
    • 3 Touring (E91)
      • 320 i (110kW/150PS)
    • X3 (E83)
      • 2.0 i (110kW/150PS)
      • xDrive 20 i (110kW/150PS)
    • 1 (E87)
      • 120 i (110kW/150PS)
      • 120 i (115kW/156PS)
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